/*
 * Copyright (C)  2017-2018 Tran Le Duy
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.duy.text.converter.utils;

import androidx.annotation.NonNull;

import java.util.ArrayList;
import java.util.Iterator;

/**
 * Created by Duy on 2/14/2018.
 */

public class CodePointUtil {
    @NonNull
    public static Iterable<Integer> codePoints(final String string) {
        return () ->
                new Iterator<Integer>() {
                    int nextIndex = 0;

                    public boolean hasNext() {
                        return nextIndex < string.length();
                    }

                    public Integer next() {
                        int result = string.codePointAt(nextIndex);
                        nextIndex += Character.charCount(result);
                        return result;
                    }

                    public void remove() {
                        throw new UnsupportedOperationException();
                    }
                };
    }

    public static ArrayList<Integer> codePointsArr(String text) {
        Iterable<Integer> iterable = codePoints(text);
        ArrayList<Integer> codePoints = new ArrayList<>();
        for (Integer codePoint : iterable) {
            codePoints.add(codePoint);
        }
        return codePoints;
    }
}
